Mick and mack went to a supermarket and bought boxes of soap detergent. mack could buy only four boxes, which was 1⁄5 as much as mick bought. how many boxes did mick buy? a. 20 b. 60 c. 40 d. 100

20

Step-by-step explanation:

Max bought 4 boxes

Let X represent total boxes bought by Mick

From the question, 1/5 of number of boxes bought by Max = 4

1/5 * X = 4

X/5 = 4 (Cross Multiply)

X = 4*5

X = 20

So, number of boxes by Max = 20

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: